Rockwell-automation 57C421B Pulsetach Input Module/DCS 5000/AutoMax Manual de usuario descargar pdf (Pagina 45)

5Ć3

Step 7. Verify that the application task is correct.

Verify that the application task that references I/O on the

module has defined the corresponding variable names as

COMMON.

Step 8. Verify that the hardware is working correctly.

WARNING

INSERTING OR REMOVING A MODULE OR ITS CONNECTING CABLES MAY

RESULT IN UNEXPECTED MACHINE MOTION. TURN OFF POWER TO THE RACK

BEFORE INSERTING OR REMOVING A MODULE OR ITS CONNECTING CABLES.

FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN BODILY

INJURY.

For local I/O, the problem may be in one of four areas.

Check these, one at a time, and determine whether the

problem has been corrected before moving to the next

area. When replacing modules, if the problem is not

corrected, replace the original module before moving to

the next step.

First replace the Pulsetach Input module and then

replace the Processor module(s).

If the problem still exists, remove all of the modules from

the backplane except one Processor module and the

Pulsetach Input module. If the problem is now corrected,

one of the other modules in the rack is not working.

ReĆconnect the other modules one at a time until the

problem returns. If none of these tests reveals the

problem, replace the backplane.

For remote I/O, first verify that the master Remote I/O

module is communicating with the drop that contains the

input module. Next determine whether the input module

is the only module that is not working. If it is not, the

problem is most likely in the remote I/O system. Refer to

JĆ3606 (Remote I/O Communications Module instruction

manual) for additional information. Otherwise, the

problem is most likely in the remote rack.

To troubleshoot the remote rack, first replace the input

module and then replace the slave Remote I/O module. If

the problem still exists, remove all of the modules from

the remote backplane except the slave Remote I/O

module and the input module. If the problem is now

corrected, one of the other modules in the rack is not

operating properly. ReĆconnect the other modules one at

a time until the problem returns. If none of these tests

reveals the problem, replace the remote backplane.

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